algorithm/Java
1
0
Fork 0
mirror of https://github.com/TheAlgorithms/Java.git synced 2025-07-27 06:23:08 +08:00
Code Issues Packages Projects Releases Wiki Activity

style: format code (#4212)

Browse Source 
close #4204
This commit is contained in:
acbin
2023-06-09 18:52:05 +08:00
committed by GitHub
parent ad03086f54
commit 00282efd8b
521 changed files with 5233 additions and 7309 deletions
Download Patch File Download Diff File Expand all files Collapse all files

41
src/main/java/com/thealgorithms/others/Luhn.java
View File

@ -67,8 +67,9 @@ public class Luhn {
public static void main(String[] args) {
System.out.println("Luhn algorithm usage examples:");
int[] validInput = { 4, 5, 6, 1, 2, 6, 1, 2, 1, 2, 3, 4, 5, 4, 6, 7 };
int[] invalidInput = { 4, 5, 6, 1, 2, 6, 1, 2, 1, 2, 3, 4, 5, 4, 6, 4 }; //typo in last symbol
int[] validInput = {4, 5, 6, 1, 2, 6, 1, 2, 1, 2, 3, 4, 5, 4, 6, 7};
int[] invalidInput = {4, 5, 6, 1, 2, 6, 1, 2, 1, 2, 3, 4, 5, 4, 6, 4}; // typo in last
// symbol
checkAndPrint(validInput);
checkAndPrint(invalidInput);
@ -83,9 +84,7 @@ public class Luhn {
private static void checkAndPrint(int[] input) {
String validationResult = Luhn.luhnCheck(input) ? "valid" : "not valid";
System.out.println(
"Input " + Arrays.toString(input) + " is " + validationResult
);
System.out.println("Input " + Arrays.toString(input) + " is " + validationResult);
}
/*
@ -109,21 +108,15 @@ public class Luhn {
public static CreditCard fromString(String cardNumber) {
Objects.requireNonNull(cardNumber);
String trimmedCardNumber = cardNumber.replaceAll(" ", "");
if (
trimmedCardNumber.length() != DIGITS_COUNT ||
!trimmedCardNumber.matches("\\d+")
) {
throw new IllegalArgumentException(
"{" + cardNumber + "} - is not a card number"
);
if (trimmedCardNumber.length() != DIGITS_COUNT || !trimmedCardNumber.matches("\\d+")) {
throw new IllegalArgumentException("{" + cardNumber + "} - is not a card number");
}
int[] cardNumbers = toIntArray(trimmedCardNumber);
boolean isValid = luhnCheck(cardNumbers);
if (!isValid) {
throw new IllegalArgumentException(
"Credit card number {" + cardNumber + "} - have a typo"
);
"Credit card number {" + cardNumber + "} - have a typo");
}
return new CreditCard(cardNumbers);
@ -146,11 +139,7 @@ public class Luhn {
@Override
public String toString() {
return String.format(
"%s {%s}",
CreditCard.class.getSimpleName(),
number()
);
return String.format("%s {%s}", CreditCard.class.getSimpleName(), number());
}
private static int[] toIntArray(String string) {
@ -161,19 +150,11 @@ public class Luhn {
private static void businessExample(String cardNumber) {
try {
System.out.println(
"Trying to create CreditCard object from valid card number: " +
cardNumber
);
"Trying to create CreditCard object from valid card number: " + cardNumber);
CreditCard creditCard = CreditCard.fromString(cardNumber);
System.out.println(
"And business object is successfully created: " +
creditCard +
"\n"
);
System.out.println("And business object is successfully created: " + creditCard + "\n");
} catch (IllegalArgumentException e) {
System.out.println(
"And fail with exception message: " + e.getMessage() + "\n"
);
System.out.println("And fail with exception message: " + e.getMessage() + "\n");
}
}
}